Just to add the data, Mercury with 0.206 and Pluto with 0.248 are the only ones with a clearly visible eccentricity, the rest of the planets have eccentricity <

Just to add the data, Mercury with 0.206 and Pluto with 0.248 are the only ones with a clearly visible eccentricity, the rest of the planets have eccentricity <0.1. For instance our Earth has 0.017 eccentricity, with an perihelion of 0.98 AU and an aphelion of 1.02 AU, so quite difficult to tell visually.